Improvement in shaft-hangers



J. FIRST. Shaft-Hanger.

No. 214,899. Patented April 29,1879.

jM-mm 90% NJEI'ERS PHOTO-IUTNOGRAFHER. WASHINGTON D C UNITED STATESPATENT OFFICE.

JOHN FIRST, OF NEW YORK, N. Y.

IMPROVEMENT IN SHAFT-HANGERS.

Specification forming part of Letters Patent No. 214,899, dated April29, 1879; application filed March 19, 1879.

To all whom it may concern:

Be it known that I, JOHN FIRST, of the city, county, and State of NewYork, haveinvented a new and useful Improvement in Shaft-Hangers, whichinvention is fully set forth in the following specification, referencebeing had to the accompanying drawings, in which-- Figure 1 represents aside view of my hanger, partly in section. Fig. 2 is a front viewthereof. Fig. 3 is a horizontal section of the same in the line .1; ac,Fig. 1.

Similar letters indicate corresponding parts.

My invention relates to that class of hangers in which theshaft-bearings are capable of adjusting themselves to the line ofshafting or the journals of the shafts hung therein. This purpose hasbeen accomplished heretofore by arranging the journal-box of a hanger tooscillate between the ends of two screws which enter center seats formedin the upper and lower parts of the box. In the hanger last referred tothe journal-box is supported solely by the screws, and hence the latterare subjected to a great amount of strain, while if the shaft mounted inthe box is drawn or strained in a lateral direction, as by a beltrunning over a pulley on the shaft, the parts of the box are pressedtogether by the ends of the screws acting upon the center seats of thebox, and the shaft runs hot.

To overcome these disadvantages is the object of my invention, whichconsists in the combination of a journal-box having segmentalprojections on opposite sides thereof, and of two vertical center screwswith rounded tips, the lower one of said screws having its top fittingin a correspondingly-shaped seat in the box, with a hanger constructedto receive the screws and to form bearings forthe segmental projections,so that while the box is permitted to swing or oscillate eithervertically or horizontally upon the screws, lateral strain on the box,in any of its positions, is received and counteracted by the body of thehanger, whereby the screws are relieved of strain and the parts of thebox are caused to retain their normal positions.

In the drawings, the letter A designates the body of my hanger; B, thejournal-box; O, the center screws 5 and D, a shaft mounted in the box.

On opposite sides of the box B are cast, or otherwise formed,projections or ears 6, which have a segmental shape, and are concentricto the center or vertical axis of the boxnamely, the axis of the screws.G. The screws 0 work in sockets F, formed on the hanger A, and theiraxes coincide with each other, while both screws are adjusted to impingeon the box at a point opposite its longitudinal axis, one above and theother below the same. The lower part of the boxB has a center seat, f,to receive the lower screw, 0, but the upper part of the box ispreferably left plain, the object of this arrangement being to renderthe box and the shaft A capable of a slight vertical oscillating motion.

The lower part of the hanger A is hookshaped, as seen in Fig. 1, and onthe vertical portions of its inner face are cast or otherwise formedribs g, which are so shaped and arranged relatively to the segmentalprojec tions 0 of the journal-box that when the latter is put in placesaid projections bear or impinge upon the ribs, the result of which isthat the journal-box is supported by thehanger in a lateral ortransverse direction. By reason of their shape the projections e do notinterfere with the horizontal movement of the box B on the center screws0, while they are also thus adapted to bear on the ribs 9 in anyposition to which the box is capable of being brought.

What I claim as new, and desire to secure by Letters Patent, is-

The combination, with the hanger having the screw-sockets F F and theribs 9, with concave curved inner faces, of the journal-box having theprojections c, with convex curved faces, and the concave seatf, and thescrews 0, having rounded tips, substantially as and for the purpose setforth.

In testimony whereof I have hereunto set my hand and seal this 17th dayof March, A. D. 1879.

JOHN FIRST. [L. s.]

Witnesses:

W. HAUFF, CHAS. WAHLERS.

